Signaling system.



H. O. RUGH.

SIGNALING SYSTEM.

APPLICATION FILED JAN. 20, 1910.

1,064,997, I Patehted June 17,1913.

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HARRY 0. HUGH, vOF SANDWICH, ILLINOIS, ASSIGNOB, BY MESNE ASSIGNMENTS,TO HALL SWITCH 86 SIGNAL COMPANY, A CORPORATION OF MAINE.

SIGNALING SYSTEM.

Application filed January 20, 1910.

To all whom it may concern Be it known that I, IIARRY O. RUGH, citizenof the United States, residing at Sandwich, in the county of Dekalb andState of Illinois, have invented a certain new and useful Improvement inSignaling Systems, of which the following is a full, clear, concise, andexact description, reference being had to the accompanying drawings,forming a part of this specification.

My invention relates to signaling systems, and has for its object theprovision of an improved selective signaling system, in which thevarious devices at the substations are operated through the agency ofcurrent supplied at the central station.

There are also several novel features with respect to the operatingparts at the substations for operating step-by-step selective mechanismin connection with calling devices at the central station.

I will describe my invention more in detail by reference to theaccompanying drawing illustrating one embodiment thereof.

In this drawing, I show line wires 1 and 2, which connect a centralstation A with substations B, C and D. At the central station I haveshown, for convenience, two sources of current, 3 and l, respectively,which are designed, through the agency of keys 5 and 6, to impress atwill currents of unlike polarities upon the line conductors 1 and 2. Ateach of the substations I have shown a cont-rolling relay 7, which ispolarized, and which has an armature 8 associated with two contacts 9and 10, so arranged that when current of one polarity is impressed uponthe line conductors 1 and 2, it will actuate the armature 8 to closecontact with one contact element 9. for instance, and when current ofopposite polarity is impressed upon the line wires 1 and 2, the armature8 takes an alternative position, and contacts with the element 10. Therelay 7 is bridged across the line conductors 1 and 2, a high resistance11 being included in this bridge in order to minimize the amount ofcurrent flowing through the bridge. There is also bridged across theline conductors 1 and 2 at the substation a telephone set consisting ofthe receiver 12, induction coil 13, transmitter 14, battery 15, switch16 and condenser 18. A similar telephone set is bridged across thecircuit at the central station.

I employ a local signal 19 at the substa- Specification of LettersPatent.

Patented June 17,1913.

Serial No. 539,164.

tions, which is included in circuit with the resistance 20, and isconnected between the line wire 1 and the contact element 21, whichcontact element is designed to be engaged by movable contact element 22,connect/ed at selected times to the other line wire 2. The movablecontact element 22 is under the control of step-by-step selectormechanism 23, which is movable in response to a magnet 24, whenever saidmagnet is connected to the line conductors 1 and 2, and receives batteryimpulses, which occur whenever the armature 8 contacts with the element10. A retaining pawl 25 holds the element 23 in a given position and isunder the control of a magnet 26, which magnet is also connected at oneof its terminals to the line wires 1, and at the other terminal, to thecontact element 9, so that said magnet 26 receives current when thearmature 8 engages the element 9. A leaf spring 27 holds the armature 28in its non-attracted position.

New, whenever it is desired to call a given station, say, the station D,impulses of given polarity through the agency of the key 5 are impressedupon the line Wires 1 and 2, the first of which impulses serves toattract armature 8 to a position where it contacts with the element 10,and this same first impulse thereupon makes one operation of the magnet24. The armature 8 remains in this given position during the time theimpulses from key 5 continue, thereby to step up element 23 to itsdesired position. When the element has reached its desired position,namely, so that the element contacts with the element 21, this samebattery current flows through the signal 19 and actuates it. Thereafter,an actuation of key 6 moves the armature 8 in its alternative position,and permits battery current to flow through the magnet 26, which therebyreleases the re taining pawl 25, and allows the element 23 at all thestations to go back to normal. In sending impulses to call a givenstation, impulses are sent so rapidly that the passage of the element 22past the element 21 of a station notdesired to call is of sufficientrapidity not to actuate in a signal-giving manner the signal 29.

While I have herein shown and particularly described the preferredembodiment of my invention, I do not limit myself to the preciseconstruction and arrangement as herein set forth, but

Having thus described my invention, What I claim as new and desire tosecure by Letters Patent is:

l. A selective signaling system comprising a central station andsubstations united by a common line circuit, a step-by-step selectormechanism at each substation, a plurality of magnets at each mechanismfor controlling same, a controlling relay at each mechanism to connecteither magnet to the line circuit, and switching devices and a source ofcurrent at the central station for operating said magnets and saidcontrolling relay.

2. A selective signaling system comprising a central station andsubstations united by a line circuit, a step-by-step selector mechanismat each substation, a step-up magnet for same, a release magnet forsame, a controlling relay for associating either of said magnets withsaid line circuit, and switching devices and a source of current at thecentral station for selectively operating said controlling relay andsaid magnets.

3. A selective signaling system comprising a central station andsubstations united by a common line circuit, a step-by-step selectormechanism at each substation, a stepup magnet for same, a release magnetfor same, a local signal for each selector mechanism and controlledthereby, a controlling relay for associating either of said magnets withsaid line circuit, and switching devices and a source of current at thecentral station for selectively operating said controlling relay, saidsignal and said magnets over said common line circuit.

4. A selective signaling system comprising a central station andsubstations united by a common line circuit, a step-by-step selectormechanism at each substation, a step-up magnet for same, a releasemagnet for same, a polarized, two-position cont-rolling relay forassociating either of said magnets with said line circuit, and switchingdevices and a source of current at the central station for selectivelyoperating said controlling relay and said magnets over said common linecircuit.

5. A selective signaling system comprising a central station andsubstations united by a common line circuit, a step-by-step selectormechanism at each substation, a plu rality of magnets for controllingsame, a local signal for each selector mechanism and controlled thereby,a controlling relay for associating either of said magnets with saidline circuit, and switching devices and a source of current at thecentral station for selectively operating said controlling relay, saidsignal and said magnets over said common line circuit.

In witness whereof, I hereunto subscribe my name this 16th day ofNovember A. D., 1909.

HARRY O. RUGH.

Witnesses MAX W. ZABEL, J. ELLIOTT.

Gopies.of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

